enforce reading in utf-8 encoding (#5476)
enforce reading in utf-8 encoding (#5476)

Co-authored-by: Dirk Groeneveld <b073420333c2c092702568e29c33453b1b3fc728@allenai.org>
allenai/allennlp,allenai/allennlp,allenai/allennlp,allenai/allennlp